package com.yupi.springbootinit.controller;
import java.util.Arrays;

import cn.hutool.core.io.FileUtil;
import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.yupi.springbootinit.annotation.AuthCheck;
import com.yupi.springbootinit.common.BaseResponse;
import com.yupi.springbootinit.common.DeleteRequest;
import com.yupi.springbootinit.common.ErrorCode;
import com.yupi.springbootinit.common.ResultUtils;
import com.yupi.springbootinit.constant.CommonConstant;
import com.yupi.springbootinit.constant.UserConstant;
import com.yupi.springbootinit.exception.BusinessException;
import com.yupi.springbootinit.exception.ThrowUtils;
import com.yupi.springbootinit.manager.AiManager;
import com.yupi.springbootinit.manager.RedisLimiterManager;
import com.yupi.springbootinit.model.dto.chart.*;


import com.yupi.springbootinit.model.entity.Chart;

import com.yupi.springbootinit.model.entity.User;

import com.yupi.springbootinit.model.vo.BiResponse;
import com.yupi.springbootinit.service.ChartService;
import com.yupi.springbootinit.service.UserService;
import com.yupi.springbootinit.utils.ExcelUtils;
import com.yupi.springbootinit.utils.SqlUtils;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang3.ObjectUtils;
import org.apache.commons.lang3.StringUtils;
import org.springframework.beans.BeanUtils;
import org.springframework.web.bind.annotation.*;
import org.springframework.web.multipart.MultipartFile;

import javax.annotation.Resource;
import javax.servlet.http.HttpServletRequest;
import java.util.List;
import java.util.concurrent.CompletableFuture;
import java.util.concurrent.ThreadPoolExecutor;


@RestController
@RequestMapping("/chart")
@Slf4j
public class ChartController {

    @Resource
    private ChartService chartService;

    @Resource
    private UserService userService;
    @Resource
    private AiManager aiManager;

    @Resource
    private RedisLimiterManager redisLimiterManager;
    @Resource
    private ThreadPoolExecutor threadPoolExecutor;
    // region 增删改查

    /**
     * 创建
     *
     * @param chartAddRequest
     * @param request
     * @return
     */
    @PostMapping("/add")
    public BaseResponse<Long> addChart(@RequestBody ChartAddRequest chartAddRequest, HttpServletRequest request) {
        if (chartAddRequest == null) {
            throw new BusinessException(ErrorCode.PARAMS_ERROR);
        }
        Chart chart = new Chart();
        BeanUtils.copyProperties(chartAddRequest, chart);
        boolean result = chartService.save(chart);
        ThrowUtils.throwIf(!result, ErrorCode.OPERATION_ERROR);
        long newChartId = chart.getId();
        return ResultUtils.success(newChartId);
    }

    /**
     * 删除
     *
     * @param deleteRequest
     * @param request
     * @return
     */
    @PostMapping("/delete")
    public BaseResponse<Boolean> deleteChart(@RequestBody DeleteRequest deleteRequest, HttpServletRequest request) {
        if (deleteRequest == null || deleteRequest.getId() <= 0) {
            throw new BusinessException(ErrorCode.PARAMS_ERROR);
        }
        User user = userService.getLoginUser(request);
        long id = deleteRequest.getId();
        // 判断是否存在
        Chart oldChart = chartService.getById(id);
        ThrowUtils.throwIf(oldChart == null, ErrorCode.NOT_FOUND_ERROR);
        // 仅本人或管理员可删除
        if (!oldChart.getUserId().equals(user.getId()) && !userService.isAdmin(request)) {
            throw new BusinessException(ErrorCode.NO_AUTH_ERROR);
        }
        boolean b = chartService.removeById(id);
        return ResultUtils.success(b);
    }

    /**
     * 更新（仅管理员）
     *
     * @param chartUpdateRequest
     * @return
     */
    @PostMapping("/update")
    @AuthCheck(mustRole = UserConstant.ADMIN_ROLE)
    public BaseResponse<Boolean> updateChart(@RequestBody ChartUpdateRequest chartUpdateRequest) {
        if (chartUpdateRequest == null || chartUpdateRequest.getId() <= 0) {
            throw new BusinessException(ErrorCode.PARAMS_ERROR);
        }
        Chart chart = new Chart();
        BeanUtils.copyProperties(chartUpdateRequest, chart);
        long id = chartUpdateRequest.getId();
        // 判断是否存在
        Chart oldChart = chartService.getById(id);
        ThrowUtils.throwIf(oldChart == null, ErrorCode.NOT_FOUND_ERROR);
        boolean result = chartService.updateById(chart);
        return ResultUtils.success(result);
    }

    /**
     * 根据 id 获取
     *
     * @param id
     * @return
     */
    @GetMapping("/get")
    public BaseResponse<Chart> getChartVOById(long id, HttpServletRequest request) {
        if (id <= 0) {
            throw new BusinessException(ErrorCode.PARAMS_ERROR);
        }
        Chart chart = chartService.getById(id);
        if (chart == null) {
            throw new BusinessException(ErrorCode.NOT_FOUND_ERROR);
        }
        return ResultUtils.success(chart);
    }
/*
    *//**
     * 分页获取列表（仅管理员）
     *
     * @param chartQueryRequest
     * @return
     *//*
    @PostMapping("/list/page")
    @AuthCheck(mustRole = UserConstant.ADMIN_ROLE)
    public BaseResponse<Page<Chart>> listChartByPage(@RequestBody ChartQueryRequest chartQueryRequest) {
        long current = chartQueryRequest.getCurrent();
        long size = chartQueryRequest.getPageSize();
        Page<Chart> chartPage = chartService.page(new Page<>(current, size),
                getQueryWrapper(chartQueryRequest));
        return ResultUtils.success(chartPage);
    }*/

    /**
     * 分页获取列表（封装类）
     *
     * @param chartQueryRequest
     * @param request
     * @return
     */
    @PostMapping("/list/page")
    public BaseResponse<Page<Chart>> listChartByPage(@RequestBody ChartQueryRequest chartQueryRequest,
            HttpServletRequest request) {
        long current = chartQueryRequest.getCurrent();
        long size = chartQueryRequest.getPageSize();
        // 限制爬虫
        ThrowUtils.throwIf(size > 20, ErrorCode.PARAMS_ERROR);
        Page<Chart> chartPage = chartService.page(new Page<>(current, size),
                getQueryWrapper(chartQueryRequest));
        return ResultUtils.success(chartPage);
    }

    /**
     * 分页获取当前用户创建的资源列表
     *
     * @param chartQueryRequest
     * @param request
     * @return
     */
    @PostMapping("/my/list/page")
    public BaseResponse<Page<Chart>> listMyChartByPage(@RequestBody ChartQueryRequest chartQueryRequest,
            HttpServletRequest request) {
        if (chartQueryRequest == null) {
            throw new BusinessException(ErrorCode.PARAMS_ERROR);
        }
        User loginUser = userService.getLoginUser(request);
        chartQueryRequest.setUserId(loginUser.getId());
        long current = chartQueryRequest.getCurrent();
        long size = chartQueryRequest.getPageSize();
        // 限制爬虫
        ThrowUtils.throwIf(size > 20, ErrorCode.PARAMS_ERROR);
        Page<Chart> chartPage = chartService.page(new Page<>(current, size),
                getQueryWrapper(chartQueryRequest));

        return ResultUtils.success(chartPage);
    }

    // endregion



    /**
     * 编辑（用户）
     *
     * @param chartEditRequest
     * @param request
     * @return
     */
    @PostMapping("/edit")
    public BaseResponse<Boolean> editChart(@RequestBody ChartEditRequest chartEditRequest, HttpServletRequest request) {
        if (chartEditRequest == null || chartEditRequest.getId() <= 0) {
            throw new BusinessException(ErrorCode.PARAMS_ERROR);
        }
        Chart chart = new Chart();
        BeanUtils.copyProperties(chartEditRequest, chart);
        User loginUser = userService.getLoginUser(request);
        long id = chartEditRequest.getId();
        // 判断是否存在
        Chart oldChart = chartService.getById(id);
        ThrowUtils.throwIf(oldChart == null, ErrorCode.NOT_FOUND_ERROR);
        // 仅本人或管理员可编辑
        if (!oldChart.getUserId().equals(loginUser.getId()) && !userService.isAdmin(loginUser)) {
            throw new BusinessException(ErrorCode.NO_AUTH_ERROR);
        }
        boolean result = chartService.updateById(chart);
        return ResultUtils.success(result);
    }
    /**
     * 获取查询包装类
     *
     * @param chartQueryRequest
     * @return
     */

    private QueryWrapper<Chart> getQueryWrapper(ChartQueryRequest chartQueryRequest) {


        QueryWrapper<Chart> queryWrapper = new QueryWrapper<>();
        if (chartQueryRequest == null) {
            return queryWrapper;
        }
        Long id = chartQueryRequest.getId();
        String name = chartQueryRequest.getName();
        String goal = chartQueryRequest.getGoal();
        String chartType = chartQueryRequest.getChartType();
        Long userId = chartQueryRequest.getUserId();
        String sortField = chartQueryRequest.getSortField();
        String sortOrder = chartQueryRequest.getSortOrder();

        queryWrapper.eq(id != null && id >0, "id",id);
        queryWrapper.eq(StringUtils.isNotBlank(name),"name",name);
        queryWrapper.eq(StringUtils.isNotBlank(goal),"chartType",chartType);
        queryWrapper.eq(StringUtils.isNotBlank(goal),"chartType",chartType);
        queryWrapper.eq(ObjectUtils.isNotEmpty(userId), "userId", userId);
        queryWrapper.eq("isDelete",false);


        queryWrapper.orderBy(SqlUtils.validSortField(sortField), sortOrder.equals(CommonConstant.SORT_ORDER_ASC),
                sortField);
        return queryWrapper;
    }
    /**
     * 智能分析同步
     *
     * @param multipartFile
     * @param
     * @param request
     * @return
     */
    @PostMapping("/gen")
    public BaseResponse<BiResponse> getChartByAi(@RequestPart("file") MultipartFile multipartFile,
                                                  GenChartByAiRequest genChartByAiRequest, HttpServletRequest request) {

        String chartType = genChartByAiRequest.getChartType();
        String name = genChartByAiRequest.getName();
        String goal = genChartByAiRequest.getGoal();
        ThrowUtils.throwIf(StringUtils.isBlank(goal), ErrorCode.PARAMS_ERROR, "目标为空");
        ThrowUtils.throwIf(StringUtils.isNotBlank(name) && name.length() > 100, ErrorCode.PARAMS_ERROR, "名称过长");

        User loginUser = userService.getLoginUser(request);
        //文件校验
        long size = multipartFile.getSize();
        String originalFilename = multipartFile.getOriginalFilename();
        final long ONE_MB=1024 * 1024L;
        ThrowUtils.throwIf(size>ONE_MB,ErrorCode.PARAMS_ERROR,"文件不能超过1kb");
        //校验文件后缀
        final List<String> validFileSuffixList= Arrays.asList("xlsx","png","csv","svg","jpg");
        String suffix = FileUtil.getSuffix(originalFilename);
        ThrowUtils.throwIf(!validFileSuffixList.contains(suffix),ErrorCode.PARAMS_ERROR,"文件后缀非法");
        // 用户输入
        StringBuilder userInput = new StringBuilder();
        userInput.append("分析需求：").append("\n");
        userInput.append(goal).append("\n");
        if (StringUtils.isNotBlank(chartType)){
            userInput.append("请使用 ").append(chartType);
        }
        String result = ExcelUtils.excelToCsv(multipartFile);

        userInput.append("原始数据：").append(result).append("\n");
        String response = aiManager.sendMsgToXingHuo(true, userInput.toString());
        String[] split = response.split("【【【【");
        if (split.length<3){
            throw new BusinessException(ErrorCode.SYSTEM_ERROR,"AI 相应错误");
        }

        String genChart =split[1].trim();
        String genResult = split[2].trim();
        //插入数据库
        Chart chart =new Chart();
        chart.setName(name);
        chart.setGoal(goal);
        chart.setChartData(result);
        chart.setChartType(chartType);
        chart.setGenChart(genChart);
        chart.setGenResult(genResult);
        chart.setStatus("");
        chart.setExecMessage("");
        chart.setUserId(loginUser.getId());
        chart.setStatus("succeed");
        boolean save = chartService.save(chart);
        ThrowUtils.throwIf(!save,ErrorCode.SYSTEM_ERROR,"图表保存失败");
        BiResponse biResponse =new BiResponse();
        biResponse.setGenChart(genChart);
        biResponse.setGenResult(genResult);
        biResponse.setChartId(chart.getId());
        return ResultUtils.success(biResponse);



    }
    /**
     * 智能分析(异步）
     *
     * @param multipartFile
     * @param
     * @param request
     * @return
     */
    @PostMapping("/gen/async")
    public BaseResponse<BiResponse> getChartByAiAsync(@RequestPart("file") MultipartFile multipartFile,
                                                      GenChartByAiRequest genChartByAiRequest, HttpServletRequest request) {

        String chartType = genChartByAiRequest.getChartType();
        String name = genChartByAiRequest.getName();
        String goal = genChartByAiRequest.getGoal();
        ThrowUtils.throwIf(StringUtils.isBlank(goal), ErrorCode.PARAMS_ERROR, "目标为空");
        ThrowUtils.throwIf(StringUtils.isNotBlank(name) && name.length() > 100, ErrorCode.PARAMS_ERROR, "名称过长");

        User loginUser = userService.getLoginUser(request);
        //限流,每个用户限流器，针对该方法。
        redisLimiterManager.doRateLimit("genChartByAi_"+ loginUser.getId());

        //文件校验
        long size = multipartFile.getSize();
        String originalFilename = multipartFile.getOriginalFilename();
        final long ONE_MB=1024 * 1024L;
        ThrowUtils.throwIf(size>ONE_MB,ErrorCode.PARAMS_ERROR,"文件不能超过1M");
        //校验文件后缀
        final List<String> validFileSuffixList= Arrays.asList("xlsx","xls");
        String suffix = FileUtil.getSuffix(originalFilename);
        ThrowUtils.throwIf(!validFileSuffixList.contains(suffix),ErrorCode.PARAMS_ERROR,"文件后缀非法");
        // 用户输入
        StringBuilder userInput = new StringBuilder();
        userInput.append("分析需求：").append("\n");
        userInput.append(goal).append("\n");
        if (StringUtils.isNotBlank(chartType)){
            userInput.append("请使用 ").append(chartType);
        }
        String result = ExcelUtils.excelToCsv(multipartFile);

        userInput.append("原始数据：").append(result).append("\n");
        //插入数据库
        Chart chart =new Chart();
        chart.setName(name);
        chart.setGoal(goal);
        chart.setChartData(result);
        chart.setChartType(chartType);
        chart.setStatus("wait");
        chart.setStatus("");
        chart.setExecMessage("");
        chart.setUserId(loginUser.getId());
        boolean save = chartService.save(chart);
        ThrowUtils.throwIf(!save,ErrorCode.SYSTEM_ERROR,"图表保存失败");
        BiResponse biResponse =new BiResponse();

        //todo 处理任务队列满了后,抛异常的情况(因为提交任务报错了,前端会返回异常)
        CompletableFuture.runAsync(()->{
            // 先修改图表任务状态为 “执行中”。等执行成功后，修改为 “已完成”、保存执行结果；执行失败后，状态修改为 “失败”，记录任务失败信息。(为了防止同一个任务被多次执行)
            Chart updateChart = new Chart();
            updateChart.setId(chart.getId());
            // 把任务状态改为执行中
            updateChart.setStatus("running");
            boolean b = chartService.updateById(updateChart);
            // 如果提交失败(一般情况下,更新失败可能意味着你的数据库出问题了)
            if (!b) {
                handleChartUpdateError(chart.getId(),"图表状态更改失败");
                return;
            }

            //调用AI
            String response = aiManager.sendMsgToXingHuo(true, userInput.toString());
            String[] split = response.split("【【【【");
            if (split.length<3){
                handleChartUpdateError(chart.getId(),"AI生成错误");
                return;
            }
            String genChart =split[1].trim();
            String genResult = split[2].trim();
            // 先修改图表任务状态为 “执行中”。等执行成功后，修改为 “已完成”、保存执行结果；执行失败后，状态修改为 “失败”，记录任务失败信息。(为了防止同一个任务被多次执行)
            Chart updateChartResult = new Chart();
            updateChartResult.setId(chart.getId());
            updateChartResult.setGenChart(genChart);
            updateChartResult.setGenResult(genResult);

            // 把任务状态改为执行中
            updateChartResult.setStatus("succeed");
            boolean c = chartService.updateById(updateChartResult);
            // 如果提交失败(一般情况下,更新失败可能意味着你的数据库出问题了)
            if (!c) {
              handleChartUpdateError(chart.getId(),"更新图表成功状态失败");

            }
        },threadPoolExecutor);

        return ResultUtils.success(biResponse);


    }

    private void handleChartUpdateError(Long chartId,String exeMessage){
        Chart updateChartResult = new Chart();
        updateChartResult.setId(chartId);
        updateChartResult.setStatus("failed");
        updateChartResult.setExecMessage(exeMessage);
        boolean updateresult = chartService.updateById(updateChartResult);
        if (!updateresult){
            log.error("更新图表失败状态失败"+chartId+exeMessage);
        }
    }
}
